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2fefb4cd7668586f403ea20b218554fb821961f7
[openocd.git] / src / flash / flash.c
1 /***************************************************************************
2 * Copyright (C) 2005 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
4 * *
5 * This program is free software; you can redistribute it and/or modify *
6 * it under the terms of the GNU General Public License as published by *
7 * the Free Software Foundation; either version 2 of the License, or *
8 * (at your option) any later version. *
9 * *
10 * This program is distributed in the hope that it will be useful, *
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
13 * GNU General Public License for more details. *
14 * *
15 * You should have received a copy of the GNU General Public License *
16 * along with this program; if not, write to the *
17 * Free Software Foundation, Inc., *
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
19 ***************************************************************************/
20 #ifdef HAVE_CONFIG_H
21 #include "config.h"
22 #endif
23
24 #include "flash.h"
25 #include "command.h"
26 #include "target.h"
27 #include "time_support.h"
28 #include "fileio.h"
29 #include "image.h"
30 #include "log.h"
31
32 #include <string.h>
33 #include <unistd.h>
34 #include <stdlib.h>
35 #include <sys/types.h>
36 #include <sys/stat.h>
37 #include <errno.h>
38 #include <inttypes.h>
39
40 /* command handlers */
41 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
42 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
43 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
44 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
45 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
46 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
47 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
48 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
49 int handle_flash_write_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
50 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
51 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
52 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
53 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc);
54 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr);
55
56 /* flash drivers
57 */
58 extern flash_driver_t lpc2000_flash;
59 extern flash_driver_t cfi_flash;
60 extern flash_driver_t at91sam7_flash;
61 extern flash_driver_t str7x_flash;
62 extern flash_driver_t str9x_flash;
63 extern flash_driver_t stellaris_flash;
64 extern flash_driver_t str9xpec_flash;
65 extern flash_driver_t stm32x_flash;
66 extern flash_driver_t tms470_flash;
67
68 flash_driver_t *flash_drivers[] =
69 {
70 &lpc2000_flash,
71 &cfi_flash,
72 &at91sam7_flash,
73 &str7x_flash,
74 &str9x_flash,
75 &stellaris_flash,
76 &str9xpec_flash,
77 &stm32x_flash,
78 &tms470_flash,
79 NULL,
80 };
81
82 flash_bank_t *flash_banks;
83 static command_t *flash_cmd;
84 static int auto_erase = 0;
85
86 /* wafer thin wrapper for invoking the flash driver */
87 static int flash_driver_write(struct flash_bank_s *bank, u8 *buffer, u32 offset, u32 count)
88 {
89 int retval=ERROR_OK;
90 if (bank->target->state != TARGET_HALTED)
91 {
92 ERROR("target not halted - aborting flash write");
93 retval=ERROR_TARGET_NOT_HALTED;
94 } else
95 {
96 retval=bank->driver->write(bank, buffer, offset, count);
97 }
98 if (retval!=ERROR_OK)
99 {
100 ERROR("Writing to flash bank at address 0x%08x at offset 0x%8.8x", bank->base, offset);
101 }
102 return retval;
103 }
104
105 static int flash_driver_erase(struct flash_bank_s *bank, int first, int last)
106 {
107 int retval=ERROR_OK;
108 if (bank->target->state != TARGET_HALTED)
109 {
110 ERROR("target not halted - aborting flash erase");
111 retval=ERROR_TARGET_NOT_HALTED;
112 } else if ((first < 0) || (last < first) || (last >= bank->num_sectors))
113 {
114 ERROR("invalid flash sector");
115 retval=ERROR_FLASH_SECTOR_INVALID;
116 } else
117 {
118 retval=bank->driver->erase(bank, first, last);
119 }
120 if (retval!=ERROR_OK)
121 {
122 ERROR("Failed erasing banks %d to %d", first, last);
123 }
124 return retval;
125 }
126
127 int flash_driver_protect(struct flash_bank_s *bank, int set, int first, int last)
128 {
129 int retval;
130 if (bank->target->state != TARGET_HALTED)
131 {
132 ERROR("target not halted - aborting flash erase");
133 retval=ERROR_TARGET_NOT_HALTED;
134 } else if ((first < 0) || (last < first) || (last >= bank->num_sectors))
135 {
136 ERROR("invalid flash sector");
137 retval=ERROR_FLASH_SECTOR_INVALID;
138 } else
139 {
140 retval=bank->driver->protect(bank, set, first, last);
141 }
142 if (retval!=ERROR_OK)
143 {
144 ERROR("Failed protecting banks %d to %d", first, last);
145 }
146 return retval;
147 }
148
149
150 int flash_register_commands(struct command_context_s *cmd_ctx)
151 {
152 flash_cmd = register_command(cmd_ctx, NULL, "flash", NULL, COMMAND_ANY, NULL);
153
154 register_command(cmd_ctx, flash_cmd, "bank", handle_flash_bank_command, COMMAND_CONFIG, "flash_bank <driver> <base> <size> <chip_width> <bus_width> <target> [driver_options ...]");
155 register_command(cmd_ctx, flash_cmd, "auto_erase", handle_flash_auto_erase_command, COMMAND_ANY,
156 "auto erase flash sectors <on|off>");
157 return ERROR_OK;
158 }
159
160 int flash_init_drivers(struct command_context_s *cmd_ctx)
161 {
162 if (flash_banks)
163 {
164 register_command(cmd_ctx, flash_cmd, "banks", handle_flash_banks_command, COMMAND_EXEC,
165 "list configured flash banks ");
166 register_command(cmd_ctx, flash_cmd, "info", handle_flash_info_command, COMMAND_EXEC,
167 "print info about flash bank <num>");
168 register_command(cmd_ctx, flash_cmd, "probe", handle_flash_probe_command, COMMAND_EXEC,
169 "identify flash bank <num>");
170 register_command(cmd_ctx, flash_cmd, "erase_check", handle_flash_erase_check_command, COMMAND_EXEC,
171 "check erase state of sectors in flash bank <num>");
172 register_command(cmd_ctx, flash_cmd, "protect_check", handle_flash_protect_check_command, COMMAND_EXEC,
173 "check protection state of sectors in flash bank <num>");
174 register_command(cmd_ctx, flash_cmd, "erase_sector", handle_flash_erase_command, COMMAND_EXEC,
175 "erase sectors at <bank> <first> <last>");
176 register_command(cmd_ctx, flash_cmd, "erase_address", handle_flash_erase_address_command, COMMAND_EXEC,
177 "erase address range <address> <length>");
178 register_command(cmd_ctx, flash_cmd, "write_bank", handle_flash_write_bank_command, COMMAND_EXEC,
179 "write binary data to <bank> <file> <offset>");
180 register_command(cmd_ctx, flash_cmd, "write_image", handle_flash_write_image_command, COMMAND_EXEC,
181 "write_image <file> [offset] [type]");
182 register_command(cmd_ctx, flash_cmd, "protect", handle_flash_protect_command, COMMAND_EXEC,
183 "set protection of sectors at <bank> <first> <last> <on|off>");
184 }
185
186 return ERROR_OK;
187 }
188
189 flash_bank_t *get_flash_bank_by_num_noprobe(int num)
190 {
191 flash_bank_t *p;
192 int i = 0;
193
194 for (p = flash_banks; p; p = p->next)
195 {
196 if (i++ == num)
197 {
198 return p;
199 }
200 }
201 ERROR("Flash bank %d does not exist", num);
202 return NULL;
203 }
204
205 flash_bank_t *get_flash_bank_by_num(int num)
206 {
207 flash_bank_t *p = get_flash_bank_by_num_noprobe(num);
208 int retval;
209
210 if (p == NULL)
211 return NULL;
212
213 retval = p->driver->auto_probe(p);
214
215 if (retval != ERROR_OK)
216 {
217 ERROR("auto_probe failed %d\n", retval);
218 return NULL;
219 }
220 return p;
221 }
222
223 int handle_flash_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
224 {
225 int i;
226 int found = 0;
227 target_t *target;
228
229 if (argc < 6)
230 {
231 return ERROR_COMMAND_SYNTAX_ERROR;
232 }
233
234 if ((target = get_target_by_num(strtoul(args[5], NULL, 0))) == NULL)
235 {
236 ERROR("target %lu not defined", strtoul(args[5], NULL, 0));
237 return ERROR_OK;
238 }
239
240 for (i = 0; flash_drivers[i]; i++)
241 {
242 if (strcmp(args[0], flash_drivers[i]->name) == 0)
243 {
244 flash_bank_t *p, *c;
245
246 /* register flash specific commands */
247 if (flash_drivers[i]->register_commands(cmd_ctx) != ERROR_OK)
248 {
249 ERROR("couldn't register '%s' commands", args[0]);
250 exit(-1);
251 }
252
253 c = malloc(sizeof(flash_bank_t));
254 c->target = target;
255 c->driver = flash_drivers[i];
256 c->driver_priv = NULL;
257 c->base = strtoul(args[1], NULL, 0);
258 c->size = strtoul(args[2], NULL, 0);
259 c->chip_width = strtoul(args[3], NULL, 0);
260 c->bus_width = strtoul(args[4], NULL, 0);
261 c->num_sectors = 0;
262 c->sectors = NULL;
263 c->next = NULL;
264
265 if (flash_drivers[i]->flash_bank_command(cmd_ctx, cmd, args, argc, c) != ERROR_OK)
266 {
267 ERROR("'%s' driver rejected flash bank at 0x%8.8x", args[0], c->base);
268 free(c);
269 return ERROR_OK;
270 }
271
272 /* put flash bank in linked list */
273 if (flash_banks)
274 {
275 /* find last flash bank */
276 for (p = flash_banks; p && p->next; p = p->next);
277 if (p)
278 p->next = c;
279 }
280 else
281 {
282 flash_banks = c;
283 }
284
285 found = 1;
286 }
287 }
288
289 /* no matching flash driver found */
290 if (!found)
291 {
292 ERROR("flash driver '%s' not found", args[0]);
293 exit(-1);
294 }
295
296 return ERROR_OK;
297 }
298
299 int handle_flash_banks_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
300 {
301 flash_bank_t *p;
302 int i = 0;
303
304 if (!flash_banks)
305 {
306 command_print(cmd_ctx, "no flash banks configured");
307 return ERROR_OK;
308 }
309
310 for (p = flash_banks; p; p = p->next)
311 {
312 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
313 i++, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
314 }
315
316 return ERROR_OK;
317 }
318
319 int handle_flash_info_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
320 {
321 flash_bank_t *p;
322 int i = 0;
323 int j = 0;
324
325 if (argc != 1)
326 {
327 return ERROR_COMMAND_SYNTAX_ERROR;
328 }
329
330 for (p = flash_banks; p; p = p->next, i++)
331 {
332 if (i == strtoul(args[0], NULL, 0))
333 {
334 char buf[1024];
335
336 /* attempt auto probe */
337 p->driver->auto_probe(p);
338
339 command_print(cmd_ctx, "#%i: %s at 0x%8.8x, size 0x%8.8x, buswidth %i, chipwidth %i",
340 i, p->driver->name, p->base, p->size, p->bus_width, p->chip_width);
341 for (j = 0; j < p->num_sectors; j++)
342 {
343 char *erase_state, *protect_state;
344
345 if (p->sectors[j].is_erased == 0)
346 erase_state = "not erased";
347 else if (p->sectors[j].is_erased == 1)
348 erase_state = "erased";
349 else
350 erase_state = "erase state unknown";
351
352 if (p->sectors[j].is_protected == 0)
353 protect_state = "not protected";
354 else if (p->sectors[j].is_protected == 1)
355 protect_state = "protected";
356 else
357 protect_state = "protection state unknown";
358
359 command_print(cmd_ctx, "\t#%i: 0x%8.8x (0x%x %ikB) %s, %s",
360 j, p->sectors[j].offset, p->sectors[j].size, p->sectors[j].size>>10,
361 erase_state, protect_state);
362 }
363
364 p->driver->info(p, buf, 1024);
365 command_print(cmd_ctx, "%s", buf);
366 }
367 }
368
369 return ERROR_OK;
370 }
371
372 int handle_flash_probe_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
373 {
374 flash_bank_t *p;
375 int retval;
376
377 if (argc != 1)
378 {
379 return ERROR_COMMAND_SYNTAX_ERROR;
380 }
381
382 p = get_flash_bank_by_num_noprobe(strtoul(args[0], NULL, 0));
383 if (p)
384 {
385 if ((retval = p->driver->probe(p)) == ERROR_OK)
386 {
387 command_print(cmd_ctx, "flash '%s' found at 0x%8.8x", p->driver->name, p->base);
388 }
389 else if (retval == ERROR_FLASH_BANK_INVALID)
390 {
391 command_print(cmd_ctx, "probing failed for flash bank '#%s' at 0x%8.8x",
392 args[0], p->base);
393 }
394 else
395 {
396 command_print(cmd_ctx, "unknown error when probing flash bank '#%s' at 0x%8.8x",
397 args[0], p->base);
398 }
399 }
400 else
401 {
402 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
403 }
404
405 return ERROR_OK;
406 }
407
408 int handle_flash_erase_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
409 {
410 flash_bank_t *p;
411 int retval;
412
413 if (argc != 1)
414 {
415 return ERROR_COMMAND_SYNTAX_ERROR;
416 }
417
418 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
419 if (p)
420 {
421 if ((retval = p->driver->erase_check(p)) == ERROR_OK)
422 {
423 command_print(cmd_ctx, "successfully checked erase state", p->driver->name, p->base);
424 }
425 else
426 {
427 command_print(cmd_ctx, "unknown error when checking erase state of flash bank #%s at 0x%8.8x",
428 args[0], p->base);
429 }
430 }
431
432 return ERROR_OK;
433 }
434
435 int handle_flash_erase_address_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
436 {
437 flash_bank_t *p;
438 int retval;
439 int address;
440 int length;
441 duration_t duration;
442 char *duration_text;
443
444 target_t *target = get_current_target(cmd_ctx);
445
446 if (argc != 2)
447 {
448 return ERROR_COMMAND_SYNTAX_ERROR;
449 }
450
451 address = strtoul(args[0], NULL, 0);
452 length = strtoul(args[1], NULL, 0);
453 if (length <= 0)
454 {
455 command_print(cmd_ctx, "Length must be >0");
456 return ERROR_COMMAND_SYNTAX_ERROR;
457 }
458
459 p = get_flash_bank_by_addr(target, address);
460 if (p == NULL)
461 {
462 return ERROR_COMMAND_SYNTAX_ERROR;
463 }
464
465 /* We can't know if we did a resume + halt, in which case we no longer know the erased state */
466 flash_set_dirty();
467
468 duration_start_measure(&duration);
469
470 if ((retval = flash_erase_address_range(target, address, length)) == ERROR_OK)
471 {
472 duration_stop_measure(&duration, &duration_text);
473 command_print(cmd_ctx, "erased address 0x%8.8x length %i in %s", address, length, duration_text);
474 free(duration_text);
475 }
476
477 return retval;
478 }
479
480 int handle_flash_protect_check_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
481 {
482 flash_bank_t *p;
483 int retval;
484
485 if (argc != 1)
486 {
487 return ERROR_COMMAND_SYNTAX_ERROR;
488 }
489
490 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
491 if (p)
492 {
493 if ((retval = p->driver->protect_check(p)) == ERROR_OK)
494 {
495 command_print(cmd_ctx, "successfully checked protect state");
496 }
497 else if (retval == ERROR_FLASH_OPERATION_FAILED)
498 {
499 command_print(cmd_ctx, "checking protection state failed (possibly unsupported) by flash #%s at 0x%8.8x", args[0], p->base);
500 }
501 else
502 {
503 command_print(cmd_ctx, "unknown error when checking protection state of flash bank '#%s' at 0x%8.8x", args[0], p->base);
504 }
505 }
506 else
507 {
508 return ERROR_COMMAND_SYNTAX_ERROR;
509 }
510
511 return ERROR_OK;
512 }
513
514 int handle_flash_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
515 {
516 if (argc > 2)
517 {
518 int first = strtoul(args[1], NULL, 0);
519 int last = strtoul(args[2], NULL, 0);
520 int retval;
521 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
522 duration_t duration;
523 char *duration_text;
524
525 duration_start_measure(&duration);
526
527 if (!p)
528 {
529 return ERROR_COMMAND_SYNTAX_ERROR;
530 }
531
532 if ((retval = flash_driver_erase(p, first, last)) == ERROR_OK)
533 {
534 duration_stop_measure(&duration, &duration_text);
535
536 command_print(cmd_ctx, "erased sectors %i through %i on flash bank %i in %s", first, last, strtoul(args[0], 0, 0), duration_text);
537 free(duration_text);
538 }
539 }
540 else
541 {
542 return ERROR_COMMAND_SYNTAX_ERROR;
543 }
544
545 return ERROR_OK;
546 }
547
548 int handle_flash_protect_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
549 {
550 if (argc > 3)
551 {
552 int first = strtoul(args[1], NULL, 0);
553 int last = strtoul(args[2], NULL, 0);
554 int set;
555 int retval;
556 flash_bank_t *p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
557 if (!p)
558 {
559 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
560 return ERROR_OK;
561 }
562
563 if (strcmp(args[3], "on") == 0)
564 set = 1;
565 else if (strcmp(args[3], "off") == 0)
566 set = 0;
567 else
568 {
569 return ERROR_COMMAND_SYNTAX_ERROR;
570 }
571
572 retval = flash_driver_protect(p, set, first, last);
573 if (retval == ERROR_OK)
574 {
575 command_print(cmd_ctx, "%s protection for sectors %i through %i on flash bank %i", (set) ? "set" : "cleared", first, last, strtoul(args[0], 0, 0));
576 }
577 }
578 else
579 {
580 return ERROR_COMMAND_SYNTAX_ERROR;
581
582 }
583
584 return ERROR_OK;
585 }
586
587 int handle_flash_write_image_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
588 {
589 target_t *target = get_current_target(cmd_ctx);
590
591 image_t image;
592 u32 written;
593
594 duration_t duration;
595 char *duration_text;
596
597 int retval;
598
599 if (argc < 1)
600 {
601 return ERROR_COMMAND_SYNTAX_ERROR;
602
603 }
604
605 if (!target)
606 {
607 ERROR("no target selected");
608 return ERROR_OK;
609 }
610
611 duration_start_measure(&duration);
612
613 if (argc >= 2)
614 {
615 image.base_address_set = 1;
616 image.base_address = strtoul(args[1], NULL, 0);
617 }
618 else
619 {
620 image.base_address_set = 0;
621 image.base_address = 0x0;
622 }
623
624 image.start_address_set = 0;
625
626 retval = image_open(&image, args[0], (argc == 3) ? args[2] : NULL);
627 if (retval != ERROR_OK)
628 {
629 command_print(cmd_ctx, "image_open error: %s", image.error_str);
630 return retval;
631 }
632
633 retval = flash_write(target, &image, &written, auto_erase);
634
635 if (retval != ERROR_OK)
636 {
637 image_close(&image);
638 return retval;
639 }
640
641 duration_stop_measure(&duration, &duration_text);
642 if (retval == ERROR_OK)
643 {
644 command_print(cmd_ctx, "wrote %u byte from file %s in %s (%f kb/s)",
645 written, args[0], duration_text,
646 (float)written / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
647 }
648 free(duration_text);
649
650 image_close(&image);
651
652 return retval;
653 }
654
655 int handle_flash_write_bank_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
656 {
657 u32 offset;
658 u8 *buffer;
659 u32 buf_cnt;
660
661 fileio_t fileio;
662
663 duration_t duration;
664 char *duration_text;
665
666 int retval;
667 flash_bank_t *p;
668
669 if (argc != 3)
670 {
671 return ERROR_COMMAND_SYNTAX_ERROR;
672 }
673
674 duration_start_measure(&duration);
675
676 offset = strtoul(args[2], NULL, 0);
677 p = get_flash_bank_by_num(strtoul(args[0], NULL, 0));
678 if (!p)
679 {
680 command_print(cmd_ctx, "flash bank '#%s' is out of bounds", args[0]);
681 return ERROR_OK;
682 }
683
684 if (fileio_open(&fileio, args[1], FILEIO_READ, FILEIO_BINARY) != ERROR_OK)
685 {
686 command_print(cmd_ctx, "flash write_binary error: %s", fileio.error_str);
687 return ERROR_OK;
688 }
689
690 buffer = malloc(fileio.size);
691 if (fileio_read(&fileio, fileio.size, buffer, &buf_cnt) != ERROR_OK)
692 {
693 command_print(cmd_ctx, "flash write_binary error: %s", fileio.error_str);
694 return ERROR_OK;
695 }
696
697 retval = flash_driver_write(p, buffer, offset, buf_cnt);
698
699 free(buffer);
700
701 duration_stop_measure(&duration, &duration_text);
702 if (retval!=ERROR_OK)
703 {
704 command_print(cmd_ctx, "wrote %"PRIi64" byte from file %s to flash bank %i at offset 0x%8.8x in %s (%f kb/s)",
705 fileio.size, args[1], strtoul(args[0], NULL, 0), offset, duration_text,
706 (float)fileio.size / 1024.0 / ((float)duration.duration.tv_sec + ((float)duration.duration.tv_usec / 1000000.0)));
707 }
708 free(duration_text);
709
710 fileio_close(&fileio);
711
712 return retval;
713 }
714
715 void flash_set_dirty(void)
716 {
717 flash_bank_t *c;
718 int i;
719
720 /* set all flash to require erasing */
721 for (c = flash_banks; c; c = c->next)
722 {
723 for (i = 0; i < c->num_sectors; i++)
724 {
725 c->sectors[i].is_erased = 0;
726 }
727 }
728 }
729
730 /* lookup flash bank by address */
731 flash_bank_t *get_flash_bank_by_addr(target_t *target, u32 addr)
732 {
733 flash_bank_t *c;
734
735 /* cycle through bank list */
736 for (c = flash_banks; c; c = c->next)
737 {
738 int retval;
739 retval = c->driver->auto_probe(c);
740
741 if (retval != ERROR_OK)
742 {
743 ERROR("auto_probe failed %d\n", retval);
744 return NULL;
745 }
746 /* check whether address belongs to this flash bank */
747 if ((addr >= c->base) && (addr < c->base + c->size) && target == c->target)
748 return c;
749 }
750 ERROR("No flash at address 0x%08x\n", addr);
751 return NULL;
752 }
753
754 /* erase given flash region, selects proper bank according to target and address */
755 int flash_erase_address_range(target_t *target, u32 addr, u32 length)
756 {
757 flash_bank_t *c;
758 int first = -1;
759 int last = -1;
760 int i;
761
762 if ((c = get_flash_bank_by_addr(target, addr)) == NULL)
763 return ERROR_FLASH_DST_OUT_OF_BANK; /* no corresponding bank found */
764
765 if (c->size == 0 || c->num_sectors == 0)
766 return ERROR_FLASH_BANK_INVALID;
767
768 if (length == 0)
769 {
770 /* special case, erase whole bank when length is zero */
771 if (addr != c->base)
772 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
773
774 return flash_driver_erase(c, 0, c->num_sectors - 1);
775 }
776
777 /* check whether it fits */
778 if (addr + length > c->base + c->size)
779 return ERROR_FLASH_DST_BREAKS_ALIGNMENT;
780
781 addr -= c->base;
782
783 for (i = 0; i < c->num_sectors; i++)
784 {
785 /* check whether sector overlaps with the given range and is not yet erased */
786 if (addr < c->sectors[i].offset + c->sectors[i].size && addr + length > c->sectors[i].offset && c->sectors[i].is_erased != 1) {
787 /* if first is not set yet then this is the first sector */
788 if (first == -1)
789 first = i;
790 last = i; /* and it is the last one so far in any case */
791 }
792 }
793
794 if( first == -1 || last == -1 )
795 return ERROR_OK;
796
797 return flash_driver_erase(c, first, last);
798 }
799
800 /* write (optional verify) an image to flash memory of the given target */
801 int flash_write(target_t *target, image_t *image, u32 *written, int erase)
802 {
803 int retval;
804
805 int section;
806 u32 section_offset;
807 flash_bank_t *c;
808
809 section = 0;
810 section_offset = 0;
811
812 if (written)
813 *written = 0;
814
815 if (erase)
816 {
817 /* assume all sectors need erasing - stops any problems
818 * when flash_write is called multiple times */
819
820 flash_set_dirty();
821 }
822
823 /* loop until we reach end of the image */
824 while (section < image->num_sections)
825 {
826 u32 buffer_size;
827 u8 *buffer;
828 int section_first;
829 int section_last;
830 u32 run_address = image->sections[section].base_address + section_offset;
831 u32 run_size = image->sections[section].size - section_offset;
832
833 if (image->sections[section].size == 0)
834 {
835 WARNING("empty section %d", section);
836 section++;
837 section_offset = 0;
838 continue;
839 }
840
841 /* find the corresponding flash bank */
842 if ((c = get_flash_bank_by_addr(target, run_address)) == NULL)
843 {
844 section++; /* and skip it */
845 section_offset = 0;
846 continue;
847 }
848
849 /* collect consecutive sections which fall into the same bank */
850 section_first = section;
851 section_last = section;
852 while ((run_address + run_size < c->base + c->size)
853 && (section_last + 1 < image->num_sections))
854 {
855 if (image->sections[section_last + 1].base_address < (run_address + run_size))
856 {
857 DEBUG("section %d out of order(very slightly surprising, but supported)", section_last + 1);
858 break;
859 }
860 if (image->sections[section_last + 1].base_address != (run_address + run_size))
861 break;
862 run_size += image->sections[++section_last].size;
863 }
864
865 /* fit the run into bank constraints */
866 if (run_address + run_size > c->base + c->size)
867 run_size = c->base + c->size - run_address;
868
869 /* allocate buffer */
870 buffer = malloc(run_size);
871 buffer_size = 0;
872
873 /* read sections to the buffer */
874 while (buffer_size < run_size)
875 {
876 u32 size_read;
877
878 if (buffer_size - run_size <= image->sections[section].size - section_offset)
879 size_read = buffer_size - run_size;
880 else
881 size_read = image->sections[section].size - section_offset;
882
883 if ((retval = image_read_section(image, section, section_offset,
884 size_read, buffer + buffer_size, &size_read)) != ERROR_OK || size_read == 0)
885 {
886 free(buffer);
887
888 return retval;
889 }
890
891 buffer_size += size_read;
892 section_offset += size_read;
893
894 if (section_offset >= image->sections[section].size)
895 {
896 section++;
897 section_offset = 0;
898 }
899 }
900
901 retval = ERROR_OK;
902
903 if (erase)
904 {
905 /* calculate and erase sectors */
906 retval = flash_erase_address_range( target, run_address, run_size );
907 }
908
909 if (retval == ERROR_OK)
910 {
911 /* write flash sectors */
912 retval = flash_driver_write(c, buffer, run_address - c->base, run_size);
913 }
914
915 free(buffer);
916
917 if (retval != ERROR_OK)
918 {
919 return retval; /* abort operation */
920 }
921
922 if (written != NULL)
923 *written += run_size; /* add run size to total written counter */
924 }
925
926 return ERROR_OK;
927 }
928
929 int handle_flash_auto_erase_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
930 {
931 if (argc != 1)
932 {
933 return ERROR_COMMAND_SYNTAX_ERROR;
934
935 }
936
937 if (strcmp(args[0], "on") == 0)
938 auto_erase = 1;
939 else if (strcmp(args[0], "off") == 0)
940 auto_erase = 0;
941 else
942 return ERROR_COMMAND_SYNTAX_ERROR;
943
944 return ERROR_OK;
945 }
Open On-Chip Debugger